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MAXIMUM CHIMNEY HEIGHTS AND SUPPORT METHOD FOR MODEL DS
Inside
Anchor
Anchor
Anchor
dia.
Plate
Plate
Plate HD
(AP)
Length
(APHD)
(APL)
3"
200
200
200
4"
200
200
200
5"
195
195
195
6"
190
190
190
7"
185
185
185
8"
180
180
180
9"
175
175
175
10"
170
170
170
12"
160
160
160
14"
150
150
150
16"
140
140
140
18"
130
130
130
20"
120
120
120
22"
110
110
110
24"
100
100
100
Table 3: Maximum Chimney Heigths DS. Dimensions are in feet
MAXIMUM CHIMNEY HEIGHTS AND SUPPORT METHOD FOR MODEL DSD
Inside
Anchor
Anchor
Anchor
dia.
Plate
Plate
Plate HD
(AP)
Length
(APHD)
(APL)
3"
100
100
100
4"
100
100
100
5"
97.5
97.5
97.5
6"
95
95
95
7"
92.5
92.5
92.5
8"
90
90
90
9"
87.5
87.5
87.5
10"
85
85
85
12"
80
80
80
14"
75
75
75
16"
70
70
70
18"
65
65
65
20"
60
60
60
22"
55
55
55
24"
50
50
50
Table 4: Maximum Chimney Height for DSD. Dimensions are in feet
Wall
Wall
Roof
Guy
Support
Support
support
support
(WS)
HD
(RS)
(GS)
(WSHD)
100
200
100
250
100
200
100
250
97.5
195
97.5
225
95
190
95
190
92.5
185
92.5
160
90
180
90
140
87.5
175
87.5
130
85
170
85
115
80
160
80
90
75
150
75
65
70
140
70
60
65
130
65
55
60
120
60
50
55
110
55
45
50
100
50
40
Wall
Wall
Roof
Guy
Support
Support
support
support
(WS)
HD
(RS)
(GS)
(WSHD)
50
100
50
115
50
100
50
115
48.75
97.5
48.75
95
47.5
95
47.5
80
46.25
92.5
46.25
70
45
90
45
65
43.75
87.5
43.75
55
42.5
85
42.5
50
40
80
40
40
37.5
75
37.5
30
35
70
35
27
32.5
65
32.5
25
30
60
30
22
27.5
55
27.5
21
25
50
25
20
MAXIMUM CHIMNEY HEIGHTS AND SUPPORT METHOD FOR MODEL DSID
Inside
Anchor
Anchor
Anchor
dia.
Plate
Plate
Plate
(AP)
Length
HD
(APL)
(APHD)
3"
95
95
95
4"
95
95
95
5"
92.5
92.5
92.5
6"
90
90
90
7"
87.5
87.5
87.5
8"
85
85
85
9"
N/A
N/A
N/A
10"
80
80
85
12"
75
75
75
14"
70
70
70
16"
65
65
65
18"
60
60
60
20"
55
55
55
22"
50
50
50
24"
N/A
N/A
N/A
Table 5: Maximum Chimney Height for DSID. Dimensions are in feet
MAXIMUM HEIGHT LIMITS FOR EACH TYPE OF SUPPORT FOR MODEL DSLS & DSLD
Flue Diameter
Parts
Anchor Plate Ventilated
Ø26 to Ø36
(APV)
Anchor plate with lenght
Ø26 to Ø36
(APVL)
Base supported Tee
Ø26 to Ø36
Wall Support Heavy Duty
Ø26 to Ø36
(WSHD)
Table 6 : Maximum Height Limits for each Type of Support for Models DSLS & DSLDD
Dimensions are in inches (diameter) and feet (distance)
GUYING AND BRACING (DS - DSD - DSID - DSLS - DSLD)
1. Proper guying and bracing is essential for part of the vent that extends
above the roof or parapet wall. The vent at this point is subject to wind
conditions and needs special attention for proper stabilization. See Figure 6
for MODEL DS, DSD & DSID and see figure 27 and 28 for DSLS & DSLD.
2. If the vent above the roof does not exceed dimension H, no special
guying or bracing is required. However, to protect the flashing from lateral
movement, a guide must be installed at the roof level. See Figure 6 for
MODEL DS, DSD & DSID and see figure 27 and 28 for DSLS & DSLD.
3. For vent height above the roof that needs guying or bracing, a support, a
small length and a expansion length must be installed near the roof level to
absorb the thermal expansion and minimise this effect on the guy wire or
brace.
4. When using guy wire, the cable must be slightly slack or loose to allow
thermal expansion.
5. When using rigid bracing, the maximum vertical height between supports
must be reduced to 5' to compensate thermal expansion.
Wall
Wall
Roof
Support
Support
support
(WS)
HD
(RS)
(WSHD)
47.5
95
47.5
47.5
95
47.5
46.25
92.5
46.25
45
90
45
43.75
87.5
43.75
42.5
85
42.5
N/A
N/A
N/A
42.5
85
42.5
37.5
75
37.5
35
70
35
32.5
65
32.5
30
60
30
27.5
55
27.5
25
50
25
N/A
N/A
N/A
Height (ft)
Ø (in)
LDCS
161
172
63
64
Guy
support
(GS)
80
80
70
65
55
50
N/A
40
30
27
25
22
21
20
N/A
LDCD
82
87
32
32
5
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